Can anything be done about this keet's feet?

I have a 4 week old keet I got along with 5 other keets from someone on CL. Peepers, besides his feet, is otherwise healthy. Good feathering, good appetite, drinking and poops like the others. But his orthopedic issue is bothering me. He might end up becoming a house Guinea if I can't find a solution to this issue.

The issue is: he can't roost. His toes are curled in such a way that he can't "cling" to a bar. He just sort of slides off.